Raymond Enay Books

Les faunes d ammonites de l oxfordien au tithonien et la biostratigraphie des Spiti shales callovien superieur tithonien de Thakkhola Nepal Central

By R. Enay

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Palaeontology of invertebrates

By R. Enay

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How could life have started on Earth and how did it proceed? After a short discussion of the origin of life on Earth and the origin of the major body plans the invertebrates are presented in the or...

Palaeontology of Invertebrates

By Raymond Enay, J. Aubouin, T. Reimer

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.